Carbureter.



` P. H. H'\ .ITGER.k

GARBURETER.

APPLICATION FILED MAY 1s, 1906. I

Patented Sept 22, 1908.. a sHsTssHEBT 1.l

f e RW I P. H. HEITGBR.

CARBURETER.'

APPLICATION FILED LIAY-16. 1906.

Patented septk 22,3%08.

3 SHEETS-swf 3.

witnesses APPLIGA'I'ION FILED MAY 16. 1906.` 899,109.`

3 SHEETS-SHEET 3.

Inventar Patentedl Sept.`22, 1908.

FRANK H. HEITGER, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO SPEED CHANGING PULIJEY COMPANY, OF INDIANAPOLIS, INDIANA, A CORPORATION F INDIANA.

CARBUBETER.

No. esame.

Application-med Hay 16, 1906. Serial No. 317,162..

Iy invention relates to improvements in apparatus for carbureting air for internal combustion engines and has special reference to improvements in carbureters of that class in which the li uid hydro-carbon, to be vaporized, is held in bulk in a small reservoir, which forms part of the carbureter, the liquid being drawn from the reservoir through a nozzle; and mixed with air, in another part of the carburetor', called the mixing chamber. The primary object of iny invention is to im rove 'the construction and operation of car ureters of the above mentioned class, with'a view of providing means whereby a constant degree` of carburetion may be imparted to the varying volume of air demanded or required by the engine'with which the carbureter is used. v

Other objects of my invention are, to provide a carbureter which shall be composed of few parts, all of simple construction and readily aeceible when the principa meinbers of the carbureter are separated;-t'o provide a carbureter which may be taken apart and re-assemblcd by even an unskilled person and without altering the adjustments or working relations of the several parts, particularly the air admission valve and nozzle of the carbureterg-further, to provide a carbureter that shall have a simple and ellicient 40 throttle valve capable of completely closing the outlet of the carbureterg-further, to novide a 'carbureter of compact forni of arge capacity and of good appearance.

illy invention will he more readily understood by reference to the accompanying drawings, forming part of this specilicationr and in whiehz A Figure l is a vertical section of a carburetor embodying my invention; Fig. 2 is a horizontal section thereof on the line X-X of Fig. l Fig. 3S is a horizontal section on the line Y-- Y of Fig. l Fig. 4 is a front elevation of the rnrlnireteigrthe outer llange of the throttle vulve casing heilig removed to dis- Speecaton of Letters Patent.

Patented' sept.22, 190s.

close the-throttle valve proper, is upon'line Z Z of Fig. 1 and, Fig. 5 is a perspective view of the throttle valve.

A. i TED STATns PATENT carica." -1

As shown in the drawings, the'body of my carbureter is made up of three princi al parts or 1nenibers;-A, B and the art A constitutes the mixing-chamber of t 1e carbureter and is provided with anV outlet Al which terminates in a lange, A, hereinafter described in connection with the throttle valve. The part A is substantially circularand in vits top contains anintcrnal boss A3 threaded to receive aspringfollower 2. On the top of the part A is an integral arm A5 for holding the adjustable, member of the nozzle as hereinafter exlained. The flange Az is best shown in iigs. 1 and 4. It will be seen to contain arecess that is of sufficient size to accommodate the throttle valve. 'The casing for the throttle valve is completed by Athe liange A of the ipe nipple or connection A. A The flange 1 may be secured to the member A in any suitable manner, as, by the three or more screws shown. ln the llange A2 and the arm A, I provide openings which form a bearing for the short v alve shaft 4, to which the throttle lever or arm 5 is connected. The end of the shaft 4 is squared to receive the upper end of the throttle valve 3 and said valve is pressed against the smooth inner surface of the llange A* and by a spring, 6, surrounding' the shaft 4, within the narrow space between the two ilanfres. I prefer that the throttle valve shalI be made of comparatively thin sheet metal in order that it may be sure to seat tightly around the outlet. opening to iit the square end of shaft 4, I prefer that the. sheet metal shall be turned up to provide the lugs 3', therebysecuring a better connection with the shaft. The upper end of the throttle valve is bent at right angles to provide. a ledge or flange, 3", to cooperate with a stop, 7, arranged in the top of llange A2. The llange casing is formed to allow the valve to swing in either direction and l prefer that the stop shall be a simple screw that may be arranged in either of two holes 7', in the top oi" the valve casing. 'lhe hole not occupied by the stop-screw is plugged by the short screw 7". lt is evi--A dent that these screws may be intel-changed to stop the movement of the valve in one In forming thef .5 'and C ating i therefor in the bottom of the member A vdirection or the other, as required to conveniently connect the carbureter with the -v f controlling or governor rod of an engine.

` The member C comprises two rings Cl annular seats C", nrovided and the top of the member B, and con: ncted by two or more integral posts, C. In brief, the member C is a spreader or separator y arranged between the upper and lower members of the one and providing an air admission space between the reservoir and the mixing-chamber. The upper part C1 of the member C contains a large central open C4 through which air is admitted to the mixing-chamber. It will be noted that the member Al does not, in itself, complete vthe nnxing-chamber, as its bottom is formed vby a separate part, to-witz-member C. This likewise is ltrue of the lower member whose top is formed by the ring C2. The members "A and B are each provided with twoor more lugs Ae and Bl respectively, and areoound or secured upon the intermediate mem er by screws, 8 and when the screws are Aemoved the members will fall apart, there being no other means 'of connection between *.Lthem. The lower member B constitutes\or contains the liquid reservoir and the vapor tube B2. The vapor tube B2 is an integralpart of the member B and is open at the top a d bottom. The upper end of the tube extendsdo'a point within the mixing-chamber; thus 1t` -will be seen that air entering at the lower end ofthe tube B;l will flow into the mixing chambei\,=\air being admit-A -ted thereto through the tube as well as through the main opening C. The lower part of themember B contains a cross 40 duct B3, integral therewith, and provided-V with an integral nozzle B4, which rises within the vapor tube B". On the lower part of the duct B3 is a short stem B5, forming' part of the union joint B, of the liquid supply pipe B. In the central part of the duct, l arrange a valve, BB, which is operated by iioat B9, within the reservoir. lhe connection between the valve and the float is made by a cross bar B10, see Fig. 3.

As shown, the liquid supply pipe communicates with the duct B3 and is thereby placed in communication with the reservoir and the nozzle B4. It should be observed that the reservoir is circular and that the nozzle is concentric therewith, likewise the lfloat B9. It follows that the nozzle is substantially at the center of the surface of the liquid within the reservoir and hence the column of liquid within the nozzle will be little, if at all, Vatleeted by the swaying of the liquid within the reservoir, occasioned by the tilting of the carbureter, as when it is used upon an automobile. 'ihe nozzle rises to a point somewhat above the level of the liquid in the reservoir,

a column of liquid always standing therein Patent: i

in readiness to be drawn forth by suction in Vthe vapor tube.l The nozzle B* is completed by an adjustable member 9, comprising a rod that is concentric with the several parts ofl the `carbureter, having its end telescoped 7( within the nozzleB. This end is provided with a pluralitylxef 'narrow slits or saweuts 1'0, which being exposed above the stop of the member B4 provide several spraying openings through which the liquid hydro- 7g carbon is dischargedinto the'vapor tube to be taken up bythe air moving therein. The upper end of the rod 9 is threaded within'the arm A5 and hence said rod is vertically adjustable. The end of the arm A5 is split and 3( contains a screw A5 for fastening the rod 9 after it is adjusted.

.As the simplest means for depressing the float to open the valve B8, when necessary, I em loy a loop'of sp1in r wi.re 11. The ends 8: of t e loop are attached to the member C at 12. At the opposite end the loop is con t-racted and assing through the hole 13 in the ring C2 is provided with a bent end whereby it may be readily forced down to de- 9( press the float within the reservoir. i

The carburetor is completed by the air atl-1 missionvalve 15 arranged within the mixing chamber. This valve is in the form of a ringl adapted to seat on the top of the ring C, to .92 close the opening C. The valve contains a central opening to accommodate the upper end of the vapor tube. -In this'connection I desire that it be understood that the valve t may have a depending part to slide upon or 1 within thevapor tube; in which ease the tube may be shorter. 1 however, prefer the construction shown, for the'reason that when the valve rises from its seat, a certain volume of air may pass through. its central opening 1( and accelerate the movement of vapor in the tube, operating after the manner of an injector. The valve has a central sleeve, 15', and is guided by the Acentral rod 9. For holding the valve upon its seat, I employ a 11 coiled spring 16 and the resistance offered by the valve to the entrance of air may be regulated by means of the follower 2, in the top of the member A, previously referred to. By adjusting the follower 2, and the nozzle 9, the Vx11 proportion of air and vapor admitted to the mixing chamber may be accurately determined and as the valve opens'or responds in'v direct ratio with the vacuum within the mixing-chamber, the degree of carburetion will 12 be maintained constant throughout the period of the use of the carburetor. As various modifications of this invention will readily suggest' themselves tonne skilled in the art, I do not conline my invention to 12 the specific constructions herein shownand described. i

Having thus described my invention, I`\ claim as newand desire to secure by letters' cated in the lower part of said tube, a. suitable A 1. In a device of the class described, a. reseiwoir containing a central vapor tube opening through its bottom and extending above its top, in combina-tien with a. suitable nozzle communicating with the reservoir and locover or top for said reservoir through which said tube extends, a mixing chamber having 5 an opening in its bottom and arranged above the top ot' the reservoir, said mixing chamber having a suitable outlet, and an automatic air admission valve arranged about the upper end of said vapor tubeI for closing the inlet opening in said mixing chamber, substantially as described.

2. In adevice of t-he class described, a reservoir containing a central vapor tube which opensV through the bottom or the `vreservoir and extends above thejtop thereof, a fuel nozzle in said vapor tube, a inixiiuy chamber .arranged above the reservoir and liaving an inlet opening concentric with said vapor tube, said mixing chamber having a suitable outlet, there being an air admission space between the top of the reservoir and the bottom of the mixing chamber, substantially as described. l

3. In a device of the class described, a reservoir containing a central vapor tube and equipped with a suitable nozzle for injecting liquid into said tube, a mixing chamber above said reservoir and having an inlet concentric with said tube, means separating said reservoir and chamber to provide' an air admission space between them, said mixing chamber having a suitable outlet and an` automatic air admission valve arranged in the inlet of said mixing chamber surrounding the upper end of said tube, substantially as described.

4. In a device of the class described, a reservoir containing a central vapor tube open at its upper and lower ends and ,of greater height than said reservoir, in combination with a suitable nozzle in said tube and communicating with said reservoir, an up er chambered member having a suitable out et, an intermediate member comprising suitably connected rings closing the top' of said reservoir and the bottom of said chambered member, the upper of said rings containing an air admission opening concentric with said tube, and an automatic air valve arranged in said chambered member, to close said o enmg, substantially as described.

. 5l n a device of the class described, a resi ervoir having a central va or tube and equipped with a. suitable nozz e in said tube, in combination with a ring fitting the upper end' of said tube and closing the'to of said reservoir, a second ring supported a Ove the first mentioned ring and containing an opening that is concentric with said tube, a cham' Y bered member provided with a'suitable outlet and having its bottom formed by said second ring and rivalve closing the opening in the second ring,substantially as described.

6. ln a devicc`of the class described, a rcservoir in combination with a chamhered member above the same, a spreader member provided with an air space between said reservoir 'and said clianibered member, and closing both thereof, spreader member containing a central opening communicating with the chamberedmiember, an air admission valve closing said opening, aA nozzle communicating with said reservoir and a. vapor tube eonununicat-ing with said chambered member through said valve, substantially as described.

7. In a device of the class described, a mixing chamber having Van` opening in its bottom, in combination with an automatic air admission valve closing said opening, a reservoir arranged beneath said member, a vapor tube rising through said reservoir and through said valve, and a nozzle provided in the lower part of said tube, substantially as described.

S. In a device of the class described, a reservoir containing a central vapor tube and provided with a nozzle opening within said tube., in combination with a valved mixing chamber wherewith said tube communicates, there being an air admission space between said reservoir and said mixing chamber, substantially as described.

9. In a device of the class described, a circular chambered member, A, in combination with a circular reservoir, B, having a central vapor tube, B2, extending into the member,-

A, a spreader member comprising suitably connected rings seated in the bottom and top of the members A. and B respectively, and means upon the members, A and B, for securing the same upon said spreader member, substantially as described.

10. In a device of the class described, a

vchamber-ed member having a suitable outlet and open at the bottom, in combination with a reservoir member containing a central vapor tube and open at the top, a nozzle within said tube,'a spreader member comprising connected rings forming the bottom of said chambered member and the top of said reservoir member, means for securing the lat-ter on said spreader member, an opening through the top of said spreader member into said chambered member and a spring pressed valve closing said opening in the top of the spreader member, substantially as de scribed. v V.

In testimony whereof, I have hereunto set my hand, in the presence of two subscribing witnesses, ythis 7th day of May, 1906.

FRANK H. HEITGER'.

Witnesses:

L. D. BUENTING, LILLiAN KRELER" 

